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[st.git] / x.c
1 /* See LICENSE for license details. */
2 #include <errno.h>
3 #include <locale.h>
4 #include <signal.h>
5 #include <stdint.h>
6 #include <sys/select.h>
7 #include <time.h>
8 #include <unistd.h>
9 #include <libgen.h>
10 #include <X11/Xatom.h>
11 #include <X11/Xlib.h>
12 #include <X11/Xutil.h>
13 #include <X11/cursorfont.h>
14 #include <X11/keysym.h>
15 #include <X11/Xft/Xft.h>
16 #include <X11/XKBlib.h>
17
18 static char *argv0;
19 #include "arg.h"
20 #include "st.h"
21 #include "win.h"
22
23 /* function definitions used in config.h */
24 static void clipcopy(const Arg *);
25 static void clippaste(const Arg *);
26 static void selpaste(const Arg *);
27 static void zoom(const Arg *);
28 static void zoomabs(const Arg *);
29 static void zoomreset(const Arg *);
30
31 /* config.h for applying patches and the configuration. */
32 #include "config.h"
33
34 /* config.h array lengths */
35 size_t colornamelen = LEN(colorname);
36 size_t mshortcutslen = LEN(mshortcuts);
37 size_t shortcutslen = LEN(shortcuts);
38 size_t selmaskslen = LEN(selmasks);
39 size_t keyslen = LEN(key);
40 size_t mappedkeyslen = LEN(mappedkeys);
41
42 /* XEMBED messages */
43 #define XEMBED_FOCUS_IN 4
44 #define XEMBED_FOCUS_OUT 5
45
46 /* macros */
47 #define TRUERED(x) (((x) & 0xff0000) >> 8)
48 #define TRUEGREEN(x) (((x) & 0xff00))
49 #define TRUEBLUE(x) (((x) & 0xff) << 8)
50
51 typedef XftDraw *Draw;
52 typedef XftColor Color;
53 typedef XftGlyphFontSpec GlyphFontSpec;
54
55 /* Purely graphic info */
56 typedef struct {
57 Display *dpy;
58 Colormap cmap;
59 Window win;
60 Drawable buf;
61 GlyphFontSpec *specbuf; /* font spec buffer used for rendering */
62 Atom xembed, wmdeletewin, netwmname, netwmpid;
63 XIM xim;
64 XIC xic;
65 Draw draw;
66 Visual *vis;
67 XSetWindowAttributes attrs;
68 int scr;
69 int isfixed; /* is fixed geometry? */
70 int l, t; /* left and top offset */
71 int gm; /* geometry mask */
72 } XWindow;
73
74 typedef struct {
75 Atom xtarget;
76 } XSelection;
77
78 /* Font structure */
79 #define Font Font_
80 typedef struct {
81 int height;
82 int width;
83 int ascent;
84 int descent;
85 int badslant;
86 int badweight;
87 short lbearing;
88 short rbearing;
89 XftFont *match;
90 FcFontSet *set;
91 FcPattern *pattern;
92 } Font;
93
94 /* Drawing Context */
95 typedef struct {
96 Color *col;
97 size_t collen;
98 Font font, bfont, ifont, ibfont;
99 GC gc;
100 } DC;
101
102 static inline ushort sixd_to_16bit(int);
103 static int xmakeglyphfontspecs(XftGlyphFontSpec *, const Glyph *, int, int, int);
104 static void xdrawglyphfontspecs(const XftGlyphFontSpec *, Glyph, int, int, int);
105 static void xdrawglyph(Glyph, int, int);
106 static void xclear(int, int, int, int);
107 static void xdrawcursor(void);
108 static int xgeommasktogravity(int);
109 static void xinit(void);
110 static void cresize(int, int);
111 static void xresize(int, int);
112 static int xloadfont(Font *, FcPattern *);
113 static void xloadfonts(char *, double);
114 static void xunloadfont(Font *);
115 static void xunloadfonts(void);
116 static void xsetenv(void);
117 static void xseturgency(int);
118 static int x2col(int);
119 static int y2row(int);
120
121 static void expose(XEvent *);
122 static void visibility(XEvent *);
123 static void unmap(XEvent *);
124 static void kpress(XEvent *);
125 static void cmessage(XEvent *);
126 static void resize(XEvent *);
127 static void focus(XEvent *);
128 static void brelease(XEvent *);
129 static void bpress(XEvent *);
130 static void bmotion(XEvent *);
131 static void propnotify(XEvent *);
132 static void selnotify(XEvent *);
133 static void selclear_(XEvent *);
134 static void selrequest(XEvent *);
135 static void selcopy(Time);
136 static void getbuttoninfo(XEvent *);
137 static void mousereport(XEvent *);
138 static char *kmap(KeySym, uint);
139 static int match(uint, uint);
140
141 static void run(void);
142 static void usage(void);
143
144 static void (*handler[LASTEvent])(XEvent *) = {
145 [KeyPress] = kpress,
146 [ClientMessage] = cmessage,
147 [ConfigureNotify] = resize,
148 [VisibilityNotify] = visibility,
149 [UnmapNotify] = unmap,
150 [Expose] = expose,
151 [FocusIn] = focus,
152 [FocusOut] = focus,
153 [MotionNotify] = bmotion,
154 [ButtonPress] = bpress,
155 [ButtonRelease] = brelease,
156 /*
157 * Uncomment if you want the selection to disappear when you select something
158 * different in another window.
159 */
160 /* [SelectionClear] = selclear_, */
161 [SelectionNotify] = selnotify,
162 /*
163 * PropertyNotify is only turned on when there is some INCR transfer happening
164 * for the selection retrieval.
165 */
166 [PropertyNotify] = propnotify,
167 [SelectionRequest] = selrequest,
168 };
169
170 /* Globals */
171 static DC dc;
172 static XWindow xw;
173 static XSelection xsel;
174
175 enum window_state {
176 WIN_VISIBLE = 1,
177 WIN_FOCUSED = 2
178 };
179
180 /* Font Ring Cache */
181 enum {
182 FRC_NORMAL,
183 FRC_ITALIC,
184 FRC_BOLD,
185 FRC_ITALICBOLD
186 };
187
188 typedef struct {
189 XftFont *font;
190 int flags;
191 Rune unicodep;
192 } Fontcache;
193
194 /* Fontcache is an array now. A new font will be appended to the array. */
195 static Fontcache frc[16];
196 static int frclen = 0;
197 static char *usedfont = NULL;
198 static double usedfontsize = 0;
199 static double defaultfontsize = 0;
200
201 static char *opt_class = NULL;
202 static char **opt_cmd = NULL;
203 static char *opt_embed = NULL;
204 static char *opt_font = NULL;
205 static char *opt_io = NULL;
206 static char *opt_line = NULL;
207 static char *opt_name = NULL;
208 static char *opt_title = NULL;
209
210 void
211 clipcopy(const Arg *dummy)
212 {
213 xclipcopy();
214 }
215
216 void
217 clippaste(const Arg *dummy)
218 {
219 xclippaste();
220 }
221
222 void
223 selpaste(const Arg *dummy)
224 {
225 xselpaste();
226 }
227
228 void
229 zoom(const Arg *arg)
230 {
231 Arg larg;
232
233 larg.f = usedfontsize + arg->f;
234 zoomabs(&larg);
235 }
236
237 void
238 zoomabs(const Arg *arg)
239 {
240 xunloadfonts();
241 xloadfonts(usedfont, arg->f);
242 cresize(0, 0);
243 ttyresize(win.tw, win.th);
244 redraw();
245 xhints();
246 }
247
248 void
249 zoomreset(const Arg *arg)
250 {
251 Arg larg;
252
253 if (defaultfontsize > 0) {
254 larg.f = defaultfontsize;
255 zoomabs(&larg);
256 }
257 }
258
259 int
260 x2col(int x)
261 {
262 x -= borderpx;
263 x /= win.cw;
264
265 return LIMIT(x, 0, term.col-1);
266 }
267
268 int
269 y2row(int y)
270 {
271 y -= borderpx;
272 y /= win.ch;
273
274 return LIMIT(y, 0, term.row-1);
275 }
276
277 void
278 getbuttoninfo(XEvent *e)
279 {
280 int type;
281 uint state = e->xbutton.state & ~(Button1Mask | forceselmod);
282
283 sel.alt = IS_SET(MODE_ALTSCREEN);
284
285 sel.oe.x = x2col(e->xbutton.x);
286 sel.oe.y = y2row(e->xbutton.y);
287 selnormalize();
288
289 sel.type = SEL_REGULAR;
290 for (type = 1; type < selmaskslen; ++type) {
291 if (match(selmasks[type], state)) {
292 sel.type = type;
293 break;
294 }
295 }
296 }
297
298 void
299 mousereport(XEvent *e)
300 {
301 int x = x2col(e->xbutton.x), y = y2row(e->xbutton.y),
302 button = e->xbutton.button, state = e->xbutton.state,
303 len;
304 char buf[40];
305 static int ox, oy;
306
307 /* from urxvt */
308 if (e->xbutton.type == MotionNotify) {
309 if (x == ox && y == oy)
310 return;
311 if (!IS_SET(MODE_MOUSEMOTION) && !IS_SET(MODE_MOUSEMANY))
312 return;
313 /* MOUSE_MOTION: no reporting if no button is pressed */
314 if (IS_SET(MODE_MOUSEMOTION) && oldbutton == 3)
315 return;
316
317 button = oldbutton + 32;
318 ox = x;
319 oy = y;
320 } else {
321 if (!IS_SET(MODE_MOUSESGR) && e->xbutton.type == ButtonRelease) {
322 button = 3;
323 } else {
324 button -= Button1;
325 if (button >= 3)
326 button += 64 - 3;
327 }
328 if (e->xbutton.type == ButtonPress) {
329 oldbutton = button;
330 ox = x;
331 oy = y;
332 } else if (e->xbutton.type == ButtonRelease) {
333 oldbutton = 3;
334 /* MODE_MOUSEX10: no button release reporting */
335 if (IS_SET(MODE_MOUSEX10))
336 return;
337 if (button == 64 || button == 65)
338 return;
339 }
340 }
341
342 if (!IS_SET(MODE_MOUSEX10)) {
343 button += ((state & ShiftMask ) ? 4 : 0)
344 + ((state & Mod4Mask ) ? 8 : 0)
345 + ((state & ControlMask) ? 16 : 0);
346 }
347
348 if (IS_SET(MODE_MOUSESGR)) {
349 len = snprintf(buf, sizeof(buf), "\033[<%d;%d;%d%c",
350 button, x+1, y+1,
351 e->xbutton.type == ButtonRelease ? 'm' : 'M');
352 } else if (x < 223 && y < 223) {
353 len = snprintf(buf, sizeof(buf), "\033[M%c%c%c",
354 32+button, 32+x+1, 32+y+1);
355 } else {
356 return;
357 }
358
359 ttywrite(buf, len);
360 }
361
362 void
363 bpress(XEvent *e)
364 {
365 struct timespec now;
366 MouseShortcut *ms;
367
368 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
369 mousereport(e);
370 return;
371 }
372
373 for (ms = mshortcuts; ms < mshortcuts + mshortcutslen; ms++) {
374 if (e->xbutton.button == ms->b
375 && match(ms->mask, e->xbutton.state)) {
376 ttysend(ms->s, strlen(ms->s));
377 return;
378 }
379 }
380
381 if (e->xbutton.button == Button1) {
382 clock_gettime(CLOCK_MONOTONIC, &now);
383
384 /* Clear previous selection, logically and visually. */
385 selclear_(NULL);
386 sel.mode = SEL_EMPTY;
387 sel.type = SEL_REGULAR;
388 sel.oe.x = sel.ob.x = x2col(e->xbutton.x);
389 sel.oe.y = sel.ob.y = y2row(e->xbutton.y);
390
391 /*
392 * If the user clicks below predefined timeouts specific
393 * snapping behaviour is exposed.
394 */
395 if (TIMEDIFF(now, sel.tclick2) <= tripleclicktimeout) {
396 sel.snap = SNAP_LINE;
397 } else if (TIMEDIFF(now, sel.tclick1) <= doubleclicktimeout) {
398 sel.snap = SNAP_WORD;
399 } else {
400 sel.snap = 0;
401 }
402 selnormalize();
403
404 if (sel.snap != 0)
405 sel.mode = SEL_READY;
406 tsetdirt(sel.nb.y, sel.ne.y);
407 sel.tclick2 = sel.tclick1;
408 sel.tclick1 = now;
409 }
410 }
411
412 void
413 selcopy(Time t)
414 {
415 xsetsel(getsel(), t);
416 }
417
418 void
419 propnotify(XEvent *e)
420 {
421 XPropertyEvent *xpev;
422 Atom clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
423
424 xpev = &e->xproperty;
425 if (xpev->state == PropertyNewValue &&
426 (xpev->atom == XA_PRIMARY ||
427 xpev->atom == clipboard)) {
428 selnotify(e);
429 }
430 }
431
432 void
433 selnotify(XEvent *e)
434 {
435 ulong nitems, ofs, rem;
436 int format;
437 uchar *data, *last, *repl;
438 Atom type, incratom, property;
439
440 incratom = XInternAtom(xw.dpy, "INCR", 0);
441
442 ofs = 0;
443 if (e->type == SelectionNotify) {
444 property = e->xselection.property;
445 } else if(e->type == PropertyNotify) {
446 property = e->xproperty.atom;
447 } else {
448 return;
449 }
450 if (property == None)
451 return;
452
453 do {
454 if (XGetWindowProperty(xw.dpy, xw.win, property, ofs,
455 BUFSIZ/4, False, AnyPropertyType,
456 &type, &format, &nitems, &rem,
457 &data)) {
458 fprintf(stderr, "Clipboard allocation failed\n");
459 return;
460 }
461
462 if (e->type == PropertyNotify && nitems == 0 && rem == 0) {
463 /*
464 * If there is some PropertyNotify with no data, then
465 * this is the signal of the selection owner that all
466 * data has been transferred. We won't need to receive
467 * PropertyNotify events anymore.
468 */
469 MODBIT(xw.attrs.event_mask, 0, PropertyChangeMask);
470 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
471 &xw.attrs);
472 }
473
474 if (type == incratom) {
475 /*
476 * Activate the PropertyNotify events so we receive
477 * when the selection owner does send us the next
478 * chunk of data.
479 */
480 MODBIT(xw.attrs.event_mask, 1, PropertyChangeMask);
481 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask,
482 &xw.attrs);
483
484 /*
485 * Deleting the property is the transfer start signal.
486 */
487 XDeleteProperty(xw.dpy, xw.win, (int)property);
488 continue;
489 }
490
491 /*
492 * As seen in getsel:
493 * Line endings are inconsistent in the terminal and GUI world
494 * copy and pasting. When receiving some selection data,
495 * replace all '\n' with '\r'.
496 * FIXME: Fix the computer world.
497 */
498 repl = data;
499 last = data + nitems * format / 8;
500 while ((repl = memchr(repl, '\n', last - repl))) {
501 *repl++ = '\r';
502 }
503
504 if (IS_SET(MODE_BRCKTPASTE) && ofs == 0)
505 ttywrite("\033[200~", 6);
506 ttysend((char *)data, nitems * format / 8);
507 if (IS_SET(MODE_BRCKTPASTE) && rem == 0)
508 ttywrite("\033[201~", 6);
509 XFree(data);
510 /* number of 32-bit chunks returned */
511 ofs += nitems * format / 32;
512 } while (rem > 0);
513
514 /*
515 * Deleting the property again tells the selection owner to send the
516 * next data chunk in the property.
517 */
518 XDeleteProperty(xw.dpy, xw.win, (int)property);
519 }
520
521 void
522 xselpaste(void)
523 {
524 XConvertSelection(xw.dpy, XA_PRIMARY, xsel.xtarget, XA_PRIMARY,
525 xw.win, CurrentTime);
526 }
527
528 void
529 xclipcopy(void)
530 {
531 Atom clipboard;
532
533 if (sel.clipboard != NULL)
534 free(sel.clipboard);
535
536 if (sel.primary != NULL) {
537 sel.clipboard = xstrdup(sel.primary);
538 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
539 XSetSelectionOwner(xw.dpy, clipboard, xw.win, CurrentTime);
540 }
541 }
542
543 void
544 xclippaste(void)
545 {
546 Atom clipboard;
547
548 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
549 XConvertSelection(xw.dpy, clipboard, xsel.xtarget, clipboard,
550 xw.win, CurrentTime);
551 }
552
553 void
554 selclear_(XEvent *e)
555 {
556 selclear();
557 }
558
559 void
560 selrequest(XEvent *e)
561 {
562 XSelectionRequestEvent *xsre;
563 XSelectionEvent xev;
564 Atom xa_targets, string, clipboard;
565 char *seltext;
566
567 xsre = (XSelectionRequestEvent *) e;
568 xev.type = SelectionNotify;
569 xev.requestor = xsre->requestor;
570 xev.selection = xsre->selection;
571 xev.target = xsre->target;
572 xev.time = xsre->time;
573 if (xsre->property == None)
574 xsre->property = xsre->target;
575
576 /* reject */
577 xev.property = None;
578
579 xa_targets = XInternAtom(xw.dpy, "TARGETS", 0);
580 if (xsre->target == xa_targets) {
581 /* respond with the supported type */
582 string = xsel.xtarget;
583 XChangeProperty(xsre->display, xsre->requestor, xsre->property,
584 XA_ATOM, 32, PropModeReplace,
585 (uchar *) &string, 1);
586 xev.property = xsre->property;
587 } else if (xsre->target == xsel.xtarget || xsre->target == XA_STRING) {
588 /*
589 * xith XA_STRING non ascii characters may be incorrect in the
590 * requestor. It is not our problem, use utf8.
591 */
592 clipboard = XInternAtom(xw.dpy, "CLIPBOARD", 0);
593 if (xsre->selection == XA_PRIMARY) {
594 seltext = sel.primary;
595 } else if (xsre->selection == clipboard) {
596 seltext = sel.clipboard;
597 } else {
598 fprintf(stderr,
599 "Unhandled clipboard selection 0x%lx\n",
600 xsre->selection);
601 return;
602 }
603 if (seltext != NULL) {
604 XChangeProperty(xsre->display, xsre->requestor,
605 xsre->property, xsre->target,
606 8, PropModeReplace,
607 (uchar *)seltext, strlen(seltext));
608 xev.property = xsre->property;
609 }
610 }
611
612 /* all done, send a notification to the listener */
613 if (!XSendEvent(xsre->display, xsre->requestor, 1, 0, (XEvent *) &xev))
614 fprintf(stderr, "Error sending SelectionNotify event\n");
615 }
616
617 void
618 xsetsel(char *str, Time t)
619 {
620 free(sel.primary);
621 sel.primary = str;
622
623 XSetSelectionOwner(xw.dpy, XA_PRIMARY, xw.win, t);
624 if (XGetSelectionOwner(xw.dpy, XA_PRIMARY) != xw.win)
625 selclear_(NULL);
626 }
627
628 void
629 brelease(XEvent *e)
630 {
631 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
632 mousereport(e);
633 return;
634 }
635
636 if (e->xbutton.button == Button2) {
637 xselpaste();
638 } else if (e->xbutton.button == Button1) {
639 if (sel.mode == SEL_READY) {
640 getbuttoninfo(e);
641 selcopy(e->xbutton.time);
642 } else
643 selclear_(NULL);
644 sel.mode = SEL_IDLE;
645 tsetdirt(sel.nb.y, sel.ne.y);
646 }
647 }
648
649 void
650 bmotion(XEvent *e)
651 {
652 int oldey, oldex, oldsby, oldsey;
653
654 if (IS_SET(MODE_MOUSE) && !(e->xbutton.state & forceselmod)) {
655 mousereport(e);
656 return;
657 }
658
659 if (!sel.mode)
660 return;
661
662 sel.mode = SEL_READY;
663 oldey = sel.oe.y;
664 oldex = sel.oe.x;
665 oldsby = sel.nb.y;
666 oldsey = sel.ne.y;
667 getbuttoninfo(e);
668
669 if (oldey != sel.oe.y || oldex != sel.oe.x)
670 tsetdirt(MIN(sel.nb.y, oldsby), MAX(sel.ne.y, oldsey));
671 }
672
673 void
674 cresize(int width, int height)
675 {
676 int col, row;
677
678 if (width != 0)
679 win.w = width;
680 if (height != 0)
681 win.h = height;
682
683 col = (win.w - 2 * borderpx) / win.cw;
684 row = (win.h - 2 * borderpx) / win.ch;
685
686 tresize(col, row);
687 xresize(col, row);
688 }
689
690 void
691 xresize(int col, int row)
692 {
693 win.tw = MAX(1, col * win.cw);
694 win.th = MAX(1, row * win.ch);
695
696 XFreePixmap(xw.dpy, xw.buf);
697 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
698 DefaultDepth(xw.dpy, xw.scr));
699 XftDrawChange(xw.draw, xw.buf);
700 xclear(0, 0, win.w, win.h);
701
702 /* resize to new width */
703 xw.specbuf = xrealloc(xw.specbuf, col * sizeof(GlyphFontSpec));
704 }
705
706 ushort
707 sixd_to_16bit(int x)
708 {
709 return x == 0 ? 0 : 0x3737 + 0x2828 * x;
710 }
711
712 int
713 xloadcolor(int i, const char *name, Color *ncolor)
714 {
715 XRenderColor color = { .alpha = 0xffff };
716
717 if (!name) {
718 if (BETWEEN(i, 16, 255)) { /* 256 color */
719 if (i < 6*6*6+16) { /* same colors as xterm */
720 color.red = sixd_to_16bit( ((i-16)/36)%6 );
721 color.green = sixd_to_16bit( ((i-16)/6) %6 );
722 color.blue = sixd_to_16bit( ((i-16)/1) %6 );
723 } else { /* greyscale */
724 color.red = 0x0808 + 0x0a0a * (i - (6*6*6+16));
725 color.green = color.blue = color.red;
726 }
727 return XftColorAllocValue(xw.dpy, xw.vis,
728 xw.cmap, &color, ncolor);
729 } else
730 name = colorname[i];
731 }
732
733 return XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, ncolor);
734 }
735
736 void
737 xloadcols(void)
738 {
739 int i;
740 static int loaded;
741 Color *cp;
742
743 dc.collen = MAX(colornamelen, 256);
744 dc.col = xmalloc(dc.collen * sizeof(Color));
745
746 if (loaded) {
747 for (cp = dc.col; cp < &dc.col[dc.collen]; ++cp)
748 XftColorFree(xw.dpy, xw.vis, xw.cmap, cp);
749 }
750
751 for (i = 0; i < dc.collen; i++)
752 if (!xloadcolor(i, NULL, &dc.col[i])) {
753 if (colorname[i])
754 die("Could not allocate color '%s'\n", colorname[i]);
755 else
756 die("Could not allocate color %d\n", i);
757 }
758 loaded = 1;
759 }
760
761 int
762 xsetcolorname(int x, const char *name)
763 {
764 Color ncolor;
765
766 if (!BETWEEN(x, 0, dc.collen))
767 return 1;
768
769
770 if (!xloadcolor(x, name, &ncolor))
771 return 1;
772
773 XftColorFree(xw.dpy, xw.vis, xw.cmap, &dc.col[x]);
774 dc.col[x] = ncolor;
775
776 return 0;
777 }
778
779 /*
780 * Absolute coordinates.
781 */
782 void
783 xclear(int x1, int y1, int x2, int y2)
784 {
785 XftDrawRect(xw.draw,
786 &dc.col[IS_SET(MODE_REVERSE)? defaultfg : defaultbg],
787 x1, y1, x2-x1, y2-y1);
788 }
789
790 void
791 xhints(void)
792 {
793 XClassHint class = {opt_name ? opt_name : termname,
794 opt_class ? opt_class : termname};
795 XWMHints wm = {.flags = InputHint, .input = 1};
796 XSizeHints *sizeh = NULL;
797
798 sizeh = XAllocSizeHints();
799
800 sizeh->flags = PSize | PResizeInc | PBaseSize;
801 sizeh->height = win.h;
802 sizeh->width = win.w;
803 sizeh->height_inc = win.ch;
804 sizeh->width_inc = win.cw;
805 sizeh->base_height = 2 * borderpx;
806 sizeh->base_width = 2 * borderpx;
807 if (xw.isfixed) {
808 sizeh->flags |= PMaxSize | PMinSize;
809 sizeh->min_width = sizeh->max_width = win.w;
810 sizeh->min_height = sizeh->max_height = win.h;
811 }
812 if (xw.gm & (XValue|YValue)) {
813 sizeh->flags |= USPosition | PWinGravity;
814 sizeh->x = xw.l;
815 sizeh->y = xw.t;
816 sizeh->win_gravity = xgeommasktogravity(xw.gm);
817 }
818
819 XSetWMProperties(xw.dpy, xw.win, NULL, NULL, NULL, 0, sizeh, &wm,
820 &class);
821 XFree(sizeh);
822 }
823
824 int
825 xgeommasktogravity(int mask)
826 {
827 switch (mask & (XNegative|YNegative)) {
828 case 0:
829 return NorthWestGravity;
830 case XNegative:
831 return NorthEastGravity;
832 case YNegative:
833 return SouthWestGravity;
834 }
835
836 return SouthEastGravity;
837 }
838
839 int
840 xloadfont(Font *f, FcPattern *pattern)
841 {
842 FcPattern *configured;
843 FcPattern *match;
844 FcResult result;
845 XGlyphInfo extents;
846 int wantattr, haveattr;
847
848 /*
849 * Manually configure instead of calling XftMatchFont
850 * so that we can use the configured pattern for
851 * "missing glyph" lookups.
852 */
853 configured = FcPatternDuplicate(pattern);
854 if (!configured)
855 return 1;
856
857 FcConfigSubstitute(NULL, configured, FcMatchPattern);
858 XftDefaultSubstitute(xw.dpy, xw.scr, configured);
859
860 match = FcFontMatch(NULL, configured, &result);
861 if (!match) {
862 FcPatternDestroy(configured);
863 return 1;
864 }
865
866 if (!(f->match = XftFontOpenPattern(xw.dpy, match))) {
867 FcPatternDestroy(configured);
868 FcPatternDestroy(match);
869 return 1;
870 }
871
872 if ((XftPatternGetInteger(pattern, "slant", 0, &wantattr) ==
873 XftResultMatch)) {
874 /*
875 * Check if xft was unable to find a font with the appropriate
876 * slant but gave us one anyway. Try to mitigate.
877 */
878 if ((XftPatternGetInteger(f->match->pattern, "slant", 0,
879 &haveattr) != XftResultMatch) || haveattr < wantattr) {
880 f->badslant = 1;
881 fputs("st: font slant does not match\n", stderr);
882 }
883 }
884
885 if ((XftPatternGetInteger(pattern, "weight", 0, &wantattr) ==
886 XftResultMatch)) {
887 if ((XftPatternGetInteger(f->match->pattern, "weight", 0,
888 &haveattr) != XftResultMatch) || haveattr != wantattr) {
889 f->badweight = 1;
890 fputs("st: font weight does not match\n", stderr);
891 }
892 }
893
894 XftTextExtentsUtf8(xw.dpy, f->match,
895 (const FcChar8 *) ascii_printable,
896 strlen(ascii_printable), &extents);
897
898 f->set = NULL;
899 f->pattern = configured;
900
901 f->ascent = f->match->ascent;
902 f->descent = f->match->descent;
903 f->lbearing = 0;
904 f->rbearing = f->match->max_advance_width;
905
906 f->height = f->ascent + f->descent;
907 f->width = DIVCEIL(extents.xOff, strlen(ascii_printable));
908
909 return 0;
910 }
911
912 void
913 xloadfonts(char *fontstr, double fontsize)
914 {
915 FcPattern *pattern;
916 double fontval;
917 float ceilf(float);
918
919 if (fontstr[0] == '-') {
920 pattern = XftXlfdParse(fontstr, False, False);
921 } else {
922 pattern = FcNameParse((FcChar8 *)fontstr);
923 }
924
925 if (!pattern)
926 die("st: can't open font %s\n", fontstr);
927
928 if (fontsize > 1) {
929 FcPatternDel(pattern, FC_PIXEL_SIZE);
930 FcPatternDel(pattern, FC_SIZE);
931 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, (double)fontsize);
932 usedfontsize = fontsize;
933 } else {
934 if (FcPatternGetDouble(pattern, FC_PIXEL_SIZE, 0, &fontval) ==
935 FcResultMatch) {
936 usedfontsize = fontval;
937 } else if (FcPatternGetDouble(pattern, FC_SIZE, 0, &fontval) ==
938 FcResultMatch) {
939 usedfontsize = -1;
940 } else {
941 /*
942 * Default font size is 12, if none given. This is to
943 * have a known usedfontsize value.
944 */
945 FcPatternAddDouble(pattern, FC_PIXEL_SIZE, 12);
946 usedfontsize = 12;
947 }
948 defaultfontsize = usedfontsize;
949 }
950
951 if (xloadfont(&dc.font, pattern))
952 die("st: can't open font %s\n", fontstr);
953
954 if (usedfontsize < 0) {
955 FcPatternGetDouble(dc.font.match->pattern,
956 FC_PIXEL_SIZE, 0, &fontval);
957 usedfontsize = fontval;
958 if (fontsize == 0)
959 defaultfontsize = fontval;
960 }
961
962 /* Setting character width and height. */
963 win.cw = ceilf(dc.font.width * cwscale);
964 win.ch = ceilf(dc.font.height * chscale);
965
966 FcPatternDel(pattern, FC_SLANT);
967 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ITALIC);
968 if (xloadfont(&dc.ifont, pattern))
969 die("st: can't open font %s\n", fontstr);
970
971 FcPatternDel(pattern, FC_WEIGHT);
972 FcPatternAddInteger(pattern, FC_WEIGHT, FC_WEIGHT_BOLD);
973 if (xloadfont(&dc.ibfont, pattern))
974 die("st: can't open font %s\n", fontstr);
975
976 FcPatternDel(pattern, FC_SLANT);
977 FcPatternAddInteger(pattern, FC_SLANT, FC_SLANT_ROMAN);
978 if (xloadfont(&dc.bfont, pattern))
979 die("st: can't open font %s\n", fontstr);
980
981 FcPatternDestroy(pattern);
982 }
983
984 void
985 xunloadfont(Font *f)
986 {
987 XftFontClose(xw.dpy, f->match);
988 FcPatternDestroy(f->pattern);
989 if (f->set)
990 FcFontSetDestroy(f->set);
991 }
992
993 void
994 xunloadfonts(void)
995 {
996 /* Free the loaded fonts in the font cache. */
997 while (frclen > 0)
998 XftFontClose(xw.dpy, frc[--frclen].font);
999
1000 xunloadfont(&dc.font);
1001 xunloadfont(&dc.bfont);
1002 xunloadfont(&dc.ifont);
1003 xunloadfont(&dc.ibfont);
1004 }
1005
1006 void
1007 xinit(void)
1008 {
1009 XGCValues gcvalues;
1010 Cursor cursor;
1011 Window parent;
1012 pid_t thispid = getpid();
1013 XColor xmousefg, xmousebg;
1014
1015 if (!(xw.dpy = XOpenDisplay(NULL)))
1016 die("Can't open display\n");
1017 xw.scr = XDefaultScreen(xw.dpy);
1018 xw.vis = XDefaultVisual(xw.dpy, xw.scr);
1019
1020 /* font */
1021 if (!FcInit())
1022 die("Could not init fontconfig.\n");
1023
1024 usedfont = (opt_font == NULL)? font : opt_font;
1025 xloadfonts(usedfont, 0);
1026
1027 /* colors */
1028 xw.cmap = XDefaultColormap(xw.dpy, xw.scr);
1029 xloadcols();
1030
1031 /* adjust fixed window geometry */
1032 win.w = 2 * borderpx + term.col * win.cw;
1033 win.h = 2 * borderpx + term.row * win.ch;
1034 if (xw.gm & XNegative)
1035 xw.l += DisplayWidth(xw.dpy, xw.scr) - win.w - 2;
1036 if (xw.gm & YNegative)
1037 xw.t += DisplayHeight(xw.dpy, xw.scr) - win.h - 2;
1038
1039 /* Events */
1040 xw.attrs.background_pixel = dc.col[defaultbg].pixel;
1041 xw.attrs.border_pixel = dc.col[defaultbg].pixel;
1042 xw.attrs.bit_gravity = NorthWestGravity;
1043 xw.attrs.event_mask = FocusChangeMask | KeyPressMask
1044 | ExposureMask | VisibilityChangeMask | StructureNotifyMask
1045 | ButtonMotionMask | ButtonPressMask | ButtonReleaseMask;
1046 xw.attrs.colormap = xw.cmap;
1047
1048 if (!(opt_embed && (parent = strtol(opt_embed, NULL, 0))))
1049 parent = XRootWindow(xw.dpy, xw.scr);
1050 xw.win = XCreateWindow(xw.dpy, parent, xw.l, xw.t,
1051 win.w, win.h, 0, XDefaultDepth(xw.dpy, xw.scr), InputOutput,
1052 xw.vis, CWBackPixel | CWBorderPixel | CWBitGravity
1053 | CWEventMask | CWColormap, &xw.attrs);
1054
1055 memset(&gcvalues, 0, sizeof(gcvalues));
1056 gcvalues.graphics_exposures = False;
1057 dc.gc = XCreateGC(xw.dpy, parent, GCGraphicsExposures,
1058 &gcvalues);
1059 xw.buf = XCreatePixmap(xw.dpy, xw.win, win.w, win.h,
1060 DefaultDepth(xw.dpy, xw.scr));
1061 XSetForeground(xw.dpy, dc.gc, dc.col[defaultbg].pixel);
1062 XFillRectangle(xw.dpy, xw.buf, dc.gc, 0, 0, win.w, win.h);
1063
1064 /* font spec buffer */
1065 xw.specbuf = xmalloc(term.col * sizeof(GlyphFontSpec));
1066
1067 /* Xft rendering context */
1068 xw.draw = XftDrawCreate(xw.dpy, xw.buf, xw.vis, xw.cmap);
1069
1070 /* input methods */
1071 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1072 XSetLocaleModifiers("@im=local");
1073 if ((xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL)) == NULL) {
1074 XSetLocaleModifiers("@im=");
1075 if ((xw.xim = XOpenIM(xw.dpy,
1076 NULL, NULL, NULL)) == NULL) {
1077 die("XOpenIM failed. Could not open input"
1078 " device.\n");
1079 }
1080 }
1081 }
1082 xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing
1083 | XIMStatusNothing, XNClientWindow, xw.win,
1084 XNFocusWindow, xw.win, NULL);
1085 if (xw.xic == NULL)
1086 die("XCreateIC failed. Could not obtain input method.\n");
1087
1088 /* white cursor, black outline */
1089 cursor = XCreateFontCursor(xw.dpy, mouseshape);
1090 XDefineCursor(xw.dpy, xw.win, cursor);
1091
1092 if (XParseColor(xw.dpy, xw.cmap, colorname[mousefg], &xmousefg) == 0) {
1093 xmousefg.red = 0xffff;
1094 xmousefg.green = 0xffff;
1095 xmousefg.blue = 0xffff;
1096 }
1097
1098 if (XParseColor(xw.dpy, xw.cmap, colorname[mousebg], &xmousebg) == 0) {
1099 xmousebg.red = 0x0000;
1100 xmousebg.green = 0x0000;
1101 xmousebg.blue = 0x0000;
1102 }
1103
1104 XRecolorCursor(xw.dpy, cursor, &xmousefg, &xmousebg);
1105
1106 xw.xembed = XInternAtom(xw.dpy, "_XEMBED", False);
1107 xw.wmdeletewin = XInternAtom(xw.dpy, "WM_DELETE_WINDOW", False);
1108 xw.netwmname = XInternAtom(xw.dpy, "_NET_WM_NAME", False);
1109 XSetWMProtocols(xw.dpy, xw.win, &xw.wmdeletewin, 1);
1110
1111 xw.netwmpid = XInternAtom(xw.dpy, "_NET_WM_PID", False);
1112 XChangeProperty(xw.dpy, xw.win, xw.netwmpid, XA_CARDINAL, 32,
1113 PropModeReplace, (uchar *)&thispid, 1);
1114
1115 resettitle();
1116 XMapWindow(xw.dpy, xw.win);
1117 xhints();
1118 XSync(xw.dpy, False);
1119
1120 xsel.xtarget = XInternAtom(xw.dpy, "UTF8_STRING", 0);
1121 if (xsel.xtarget == None)
1122 xsel.xtarget = XA_STRING;
1123 }
1124
1125 int
1126 xmakeglyphfontspecs(XftGlyphFontSpec *specs, const Glyph *glyphs, int len, int x, int y)
1127 {
1128 float winx = borderpx + x * win.cw, winy = borderpx + y * win.ch, xp, yp;
1129 ushort mode, prevmode = USHRT_MAX;
1130 Font *font = &dc.font;
1131 int frcflags = FRC_NORMAL;
1132 float runewidth = win.cw;
1133 Rune rune;
1134 FT_UInt glyphidx;
1135 FcResult fcres;
1136 FcPattern *fcpattern, *fontpattern;
1137 FcFontSet *fcsets[] = { NULL };
1138 FcCharSet *fccharset;
1139 int i, f, numspecs = 0;
1140
1141 for (i = 0, xp = winx, yp = winy + font->ascent; i < len; ++i) {
1142 /* Fetch rune and mode for current glyph. */
1143 rune = glyphs[i].u;
1144 mode = glyphs[i].mode;
1145
1146 /* Skip dummy wide-character spacing. */
1147 if (mode == ATTR_WDUMMY)
1148 continue;
1149
1150 /* Determine font for glyph if different from previous glyph. */
1151 if (prevmode != mode) {
1152 prevmode = mode;
1153 font = &dc.font;
1154 frcflags = FRC_NORMAL;
1155 runewidth = win.cw * ((mode & ATTR_WIDE) ? 2.0f : 1.0f);
1156 if ((mode & ATTR_ITALIC) && (mode & ATTR_BOLD)) {
1157 font = &dc.ibfont;
1158 frcflags = FRC_ITALICBOLD;
1159 } else if (mode & ATTR_ITALIC) {
1160 font = &dc.ifont;
1161 frcflags = FRC_ITALIC;
1162 } else if (mode & ATTR_BOLD) {
1163 font = &dc.bfont;
1164 frcflags = FRC_BOLD;
1165 }
1166 yp = winy + font->ascent;
1167 }
1168
1169 /* Lookup character index with default font. */
1170 glyphidx = XftCharIndex(xw.dpy, font->match, rune);
1171 if (glyphidx) {
1172 specs[numspecs].font = font->match;
1173 specs[numspecs].glyph = glyphidx;
1174 specs[numspecs].x = (short)xp;
1175 specs[numspecs].y = (short)yp;
1176 xp += runewidth;
1177 numspecs++;
1178 continue;
1179 }
1180
1181 /* Fallback on font cache, search the font cache for match. */
1182 for (f = 0; f < frclen; f++) {
1183 glyphidx = XftCharIndex(xw.dpy, frc[f].font, rune);
1184 /* Everything correct. */
1185 if (glyphidx && frc[f].flags == frcflags)
1186 break;
1187 /* We got a default font for a not found glyph. */
1188 if (!glyphidx && frc[f].flags == frcflags
1189 && frc[f].unicodep == rune) {
1190 break;
1191 }
1192 }
1193
1194 /* Nothing was found. Use fontconfig to find matching font. */
1195 if (f >= frclen) {
1196 if (!font->set)
1197 font->set = FcFontSort(0, font->pattern,
1198 1, 0, &fcres);
1199 fcsets[0] = font->set;
1200
1201 /*
1202 * Nothing was found in the cache. Now use
1203 * some dozen of Fontconfig calls to get the
1204 * font for one single character.
1205 *
1206 * Xft and fontconfig are design failures.
1207 */
1208 fcpattern = FcPatternDuplicate(font->pattern);
1209 fccharset = FcCharSetCreate();
1210
1211 FcCharSetAddChar(fccharset, rune);
1212 FcPatternAddCharSet(fcpattern, FC_CHARSET,
1213 fccharset);
1214 FcPatternAddBool(fcpattern, FC_SCALABLE, 1);
1215
1216 FcConfigSubstitute(0, fcpattern,
1217 FcMatchPattern);
1218 FcDefaultSubstitute(fcpattern);
1219
1220 fontpattern = FcFontSetMatch(0, fcsets, 1,
1221 fcpattern, &fcres);
1222
1223 /*
1224 * Overwrite or create the new cache entry.
1225 */
1226 if (frclen >= LEN(frc)) {
1227 frclen = LEN(frc) - 1;
1228 XftFontClose(xw.dpy, frc[frclen].font);
1229 frc[frclen].unicodep = 0;
1230 }
1231
1232 frc[frclen].font = XftFontOpenPattern(xw.dpy,
1233 fontpattern);
1234 if (!frc[frclen].font)
1235 die("XftFontOpenPattern failed seeking fallback font: %s\n",
1236 strerror(errno));
1237 frc[frclen].flags = frcflags;
1238 frc[frclen].unicodep = rune;
1239
1240 glyphidx = XftCharIndex(xw.dpy, frc[frclen].font, rune);
1241
1242 f = frclen;
1243 frclen++;
1244
1245 FcPatternDestroy(fcpattern);
1246 FcCharSetDestroy(fccharset);
1247 }
1248
1249 specs[numspecs].font = frc[f].font;
1250 specs[numspecs].glyph = glyphidx;
1251 specs[numspecs].x = (short)xp;
1252 specs[numspecs].y = (short)yp;
1253 xp += runewidth;
1254 numspecs++;
1255 }
1256
1257 return numspecs;
1258 }
1259
1260 void
1261 xdrawglyphfontspecs(const XftGlyphFontSpec *specs, Glyph base, int len, int x, int y)
1262 {
1263 int charlen = len * ((base.mode & ATTR_WIDE) ? 2 : 1);
1264 int winx = borderpx + x * win.cw, winy = borderpx + y * win.ch,
1265 width = charlen * win.cw;
1266 Color *fg, *bg, *temp, revfg, revbg, truefg, truebg;
1267 XRenderColor colfg, colbg;
1268 XRectangle r;
1269
1270 /* Fallback on color display for attributes not supported by the font */
1271 if (base.mode & ATTR_ITALIC && base.mode & ATTR_BOLD) {
1272 if (dc.ibfont.badslant || dc.ibfont.badweight)
1273 base.fg = defaultattr;
1274 } else if ((base.mode & ATTR_ITALIC && dc.ifont.badslant) ||
1275 (base.mode & ATTR_BOLD && dc.bfont.badweight)) {
1276 base.fg = defaultattr;
1277 }
1278
1279 if (IS_TRUECOL(base.fg)) {
1280 colfg.alpha = 0xffff;
1281 colfg.red = TRUERED(base.fg);
1282 colfg.green = TRUEGREEN(base.fg);
1283 colfg.blue = TRUEBLUE(base.fg);
1284 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &truefg);
1285 fg = &truefg;
1286 } else {
1287 fg = &dc.col[base.fg];
1288 }
1289
1290 if (IS_TRUECOL(base.bg)) {
1291 colbg.alpha = 0xffff;
1292 colbg.green = TRUEGREEN(base.bg);
1293 colbg.red = TRUERED(base.bg);
1294 colbg.blue = TRUEBLUE(base.bg);
1295 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg, &truebg);
1296 bg = &truebg;
1297 } else {
1298 bg = &dc.col[base.bg];
1299 }
1300
1301 /* Change basic system colors [0-7] to bright system colors [8-15] */
1302 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_BOLD && BETWEEN(base.fg, 0, 7))
1303 fg = &dc.col[base.fg + 8];
1304
1305 if (IS_SET(MODE_REVERSE)) {
1306 if (fg == &dc.col[defaultfg]) {
1307 fg = &dc.col[defaultbg];
1308 } else {
1309 colfg.red = ~fg->color.red;
1310 colfg.green = ~fg->color.green;
1311 colfg.blue = ~fg->color.blue;
1312 colfg.alpha = fg->color.alpha;
1313 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg,
1314 &revfg);
1315 fg = &revfg;
1316 }
1317
1318 if (bg == &dc.col[defaultbg]) {
1319 bg = &dc.col[defaultfg];
1320 } else {
1321 colbg.red = ~bg->color.red;
1322 colbg.green = ~bg->color.green;
1323 colbg.blue = ~bg->color.blue;
1324 colbg.alpha = bg->color.alpha;
1325 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colbg,
1326 &revbg);
1327 bg = &revbg;
1328 }
1329 }
1330
1331 if ((base.mode & ATTR_BOLD_FAINT) == ATTR_FAINT) {
1332 colfg.red = fg->color.red / 2;
1333 colfg.green = fg->color.green / 2;
1334 colfg.blue = fg->color.blue / 2;
1335 colfg.alpha = fg->color.alpha;
1336 XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &colfg, &revfg);
1337 fg = &revfg;
1338 }
1339
1340
1341 if (base.mode & ATTR_REVERSE) {
1342 temp = fg;
1343 fg = bg;
1344 bg = temp;
1345 }
1346
1347 if (base.mode & ATTR_BLINK && term.mode & MODE_BLINK)
1348 fg = bg;
1349
1350 if (base.mode & ATTR_INVISIBLE)
1351 fg = bg;
1352
1353 /* Intelligent cleaning up of the borders. */
1354 if (x == 0) {
1355 xclear(0, (y == 0)? 0 : winy, borderpx,
1356 winy + win.ch + ((y >= term.row-1)? win.h : 0));
1357 }
1358 if (x + charlen >= term.col) {
1359 xclear(winx + width, (y == 0)? 0 : winy, win.w,
1360 ((y >= term.row-1)? win.h : (winy + win.ch)));
1361 }
1362 if (y == 0)
1363 xclear(winx, 0, winx + width, borderpx);
1364 if (y == term.row-1)
1365 xclear(winx, winy + win.ch, winx + width, win.h);
1366
1367 /* Clean up the region we want to draw to. */
1368 XftDrawRect(xw.draw, bg, winx, winy, width, win.ch);
1369
1370 /* Set the clip region because Xft is sometimes dirty. */
1371 r.x = 0;
1372 r.y = 0;
1373 r.height = win.ch;
1374 r.width = width;
1375 XftDrawSetClipRectangles(xw.draw, winx, winy, &r, 1);
1376
1377 /* Render the glyphs. */
1378 XftDrawGlyphFontSpec(xw.draw, fg, specs, len);
1379
1380 /* Render underline and strikethrough. */
1381 if (base.mode & ATTR_UNDERLINE) {
1382 XftDrawRect(xw.draw, fg, winx, winy + dc.font.ascent + 1,
1383 width, 1);
1384 }
1385
1386 if (base.mode & ATTR_STRUCK) {
1387 XftDrawRect(xw.draw, fg, winx, winy + 2 * dc.font.ascent / 3,
1388 width, 1);
1389 }
1390
1391 /* Reset clip to none. */
1392 XftDrawSetClip(xw.draw, 0);
1393 }
1394
1395 void
1396 xdrawglyph(Glyph g, int x, int y)
1397 {
1398 int numspecs;
1399 XftGlyphFontSpec spec;
1400
1401 numspecs = xmakeglyphfontspecs(&spec, &g, 1, x, y);
1402 xdrawglyphfontspecs(&spec, g, numspecs, x, y);
1403 }
1404
1405 void
1406 xdrawcursor(void)
1407 {
1408 static int oldx = 0, oldy = 0;
1409 int curx;
1410 Glyph g = {' ', ATTR_NULL, defaultbg, defaultcs}, og;
1411 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1412 Color drawcol;
1413
1414 LIMIT(oldx, 0, term.col-1);
1415 LIMIT(oldy, 0, term.row-1);
1416
1417 curx = term.c.x;
1418
1419 /* adjust position if in dummy */
1420 if (term.line[oldy][oldx].mode & ATTR_WDUMMY)
1421 oldx--;
1422 if (term.line[term.c.y][curx].mode & ATTR_WDUMMY)
1423 curx--;
1424
1425 /* remove the old cursor */
1426 og = term.line[oldy][oldx];
1427 if (ena_sel && selected(oldx, oldy))
1428 og.mode ^= ATTR_REVERSE;
1429 xdrawglyph(og, oldx, oldy);
1430
1431 g.u = term.line[term.c.y][term.c.x].u;
1432 g.mode |= term.line[term.c.y][term.c.x].mode &
1433 (ATTR_BOLD | ATTR_ITALIC | ATTR_UNDERLINE | ATTR_STRUCK);
1434
1435 /*
1436 * Select the right color for the right mode.
1437 */
1438 if (IS_SET(MODE_REVERSE)) {
1439 g.mode |= ATTR_REVERSE;
1440 g.bg = defaultfg;
1441 if (ena_sel && selected(term.c.x, term.c.y)) {
1442 drawcol = dc.col[defaultcs];
1443 g.fg = defaultrcs;
1444 } else {
1445 drawcol = dc.col[defaultrcs];
1446 g.fg = defaultcs;
1447 }
1448 } else {
1449 if (ena_sel && selected(term.c.x, term.c.y)) {
1450 drawcol = dc.col[defaultrcs];
1451 g.fg = defaultfg;
1452 g.bg = defaultrcs;
1453 } else {
1454 drawcol = dc.col[defaultcs];
1455 }
1456 }
1457
1458 if (IS_SET(MODE_HIDE))
1459 return;
1460
1461 /* draw the new one */
1462 if (win.state & WIN_FOCUSED) {
1463 switch (win.cursor) {
1464 case 7: /* st extension: snowman */
1465 utf8decode("☃", &g.u, UTF_SIZ);
1466 case 0: /* Blinking Block */
1467 case 1: /* Blinking Block (Default) */
1468 case 2: /* Steady Block */
1469 g.mode |= term.line[term.c.y][curx].mode & ATTR_WIDE;
1470 xdrawglyph(g, term.c.x, term.c.y);
1471 break;
1472 case 3: /* Blinking Underline */
1473 case 4: /* Steady Underline */
1474 XftDrawRect(xw.draw, &drawcol,
1475 borderpx + curx * win.cw,
1476 borderpx + (term.c.y + 1) * win.ch - \
1477 cursorthickness,
1478 win.cw, cursorthickness);
1479 break;
1480 case 5: /* Blinking bar */
1481 case 6: /* Steady bar */
1482 XftDrawRect(xw.draw, &drawcol,
1483 borderpx + curx * win.cw,
1484 borderpx + term.c.y * win.ch,
1485 cursorthickness, win.ch);
1486 break;
1487 }
1488 } else {
1489 XftDrawRect(xw.draw, &drawcol,
1490 borderpx + curx * win.cw,
1491 borderpx + term.c.y * win.ch,
1492 win.cw - 1, 1);
1493 XftDrawRect(xw.draw, &drawcol,
1494 borderpx + curx * win.cw,
1495 borderpx + term.c.y * win.ch,
1496 1, win.ch - 1);
1497 XftDrawRect(xw.draw, &drawcol,
1498 borderpx + (curx + 1) * win.cw - 1,
1499 borderpx + term.c.y * win.ch,
1500 1, win.ch - 1);
1501 XftDrawRect(xw.draw, &drawcol,
1502 borderpx + curx * win.cw,
1503 borderpx + (term.c.y + 1) * win.ch - 1,
1504 win.cw, 1);
1505 }
1506 oldx = curx, oldy = term.c.y;
1507 }
1508
1509 void
1510 xsetenv(void)
1511 {
1512 char buf[sizeof(long) * 8 + 1];
1513
1514 snprintf(buf, sizeof(buf), "%lu", xw.win);
1515 setenv("WINDOWID", buf, 1);
1516 }
1517
1518 void
1519 xsettitle(char *p)
1520 {
1521 XTextProperty prop;
1522 DEFAULT(p, "st");
1523
1524 Xutf8TextListToTextProperty(xw.dpy, &p, 1, XUTF8StringStyle,
1525 &prop);
1526 XSetWMName(xw.dpy, xw.win, &prop);
1527 XSetTextProperty(xw.dpy, xw.win, &prop, xw.netwmname);
1528 XFree(prop.value);
1529 }
1530
1531 void
1532 draw(void)
1533 {
1534 drawregion(0, 0, term.col, term.row);
1535 XCopyArea(xw.dpy, xw.buf, xw.win, dc.gc, 0, 0, win.w,
1536 win.h, 0, 0);
1537 XSetForeground(xw.dpy, dc.gc,
1538 dc.col[IS_SET(MODE_REVERSE)?
1539 defaultfg : defaultbg].pixel);
1540 }
1541
1542 void
1543 drawregion(int x1, int y1, int x2, int y2)
1544 {
1545 int i, x, y, ox, numspecs;
1546 Glyph base, new;
1547 XftGlyphFontSpec *specs;
1548 int ena_sel = sel.ob.x != -1 && sel.alt == IS_SET(MODE_ALTSCREEN);
1549
1550 if (!(win.state & WIN_VISIBLE))
1551 return;
1552
1553 for (y = y1; y < y2; y++) {
1554 if (!term.dirty[y])
1555 continue;
1556
1557 term.dirty[y] = 0;
1558
1559 specs = xw.specbuf;
1560 numspecs = xmakeglyphfontspecs(specs, &term.line[y][x1], x2 - x1, x1, y);
1561
1562 i = ox = 0;
1563 for (x = x1; x < x2 && i < numspecs; x++) {
1564 new = term.line[y][x];
1565 if (new.mode == ATTR_WDUMMY)
1566 continue;
1567 if (ena_sel && selected(x, y))
1568 new.mode ^= ATTR_REVERSE;
1569 if (i > 0 && ATTRCMP(base, new)) {
1570 xdrawglyphfontspecs(specs, base, i, ox, y);
1571 specs += i;
1572 numspecs -= i;
1573 i = 0;
1574 }
1575 if (i == 0) {
1576 ox = x;
1577 base = new;
1578 }
1579 i++;
1580 }
1581 if (i > 0)
1582 xdrawglyphfontspecs(specs, base, i, ox, y);
1583 }
1584 xdrawcursor();
1585 }
1586
1587 void
1588 expose(XEvent *ev)
1589 {
1590 redraw();
1591 }
1592
1593 void
1594 visibility(XEvent *ev)
1595 {
1596 XVisibilityEvent *e = &ev->xvisibility;
1597
1598 MODBIT(win.state, e->state != VisibilityFullyObscured, WIN_VISIBLE);
1599 }
1600
1601 void
1602 unmap(XEvent *ev)
1603 {
1604 win.state &= ~WIN_VISIBLE;
1605 }
1606
1607 void
1608 xsetpointermotion(int set)
1609 {
1610 MODBIT(xw.attrs.event_mask, set, PointerMotionMask);
1611 XChangeWindowAttributes(xw.dpy, xw.win, CWEventMask, &xw.attrs);
1612 }
1613
1614 void
1615 xseturgency(int add)
1616 {
1617 XWMHints *h = XGetWMHints(xw.dpy, xw.win);
1618
1619 MODBIT(h->flags, add, XUrgencyHint);
1620 XSetWMHints(xw.dpy, xw.win, h);
1621 XFree(h);
1622 }
1623
1624 void
1625 xbell(void)
1626 {
1627 if (!(win.state & WIN_FOCUSED))
1628 xseturgency(1);
1629 if (bellvolume)
1630 XkbBell(xw.dpy, xw.win, bellvolume, (Atom)NULL);
1631 }
1632
1633 void
1634 focus(XEvent *ev)
1635 {
1636 XFocusChangeEvent *e = &ev->xfocus;
1637
1638 if (e->mode == NotifyGrab)
1639 return;
1640
1641 if (ev->type == FocusIn) {
1642 XSetICFocus(xw.xic);
1643 win.state |= WIN_FOCUSED;
1644 xseturgency(0);
1645 if (IS_SET(MODE_FOCUS))
1646 ttywrite("\033[I", 3);
1647 } else {
1648 XUnsetICFocus(xw.xic);
1649 win.state &= ~WIN_FOCUSED;
1650 if (IS_SET(MODE_FOCUS))
1651 ttywrite("\033[O", 3);
1652 }
1653 }
1654
1655 int
1656 match(uint mask, uint state)
1657 {
1658 return mask == XK_ANY_MOD || mask == (state & ~ignoremod);
1659 }
1660
1661 char*
1662 kmap(KeySym k, uint state)
1663 {
1664 Key *kp;
1665 int i;
1666
1667 /* Check for mapped keys out of X11 function keys. */
1668 for (i = 0; i < mappedkeyslen; i++) {
1669 if (mappedkeys[i] == k)
1670 break;
1671 }
1672 if (i == mappedkeyslen) {
1673 if ((k & 0xFFFF) < 0xFD00)
1674 return NULL;
1675 }
1676
1677 for (kp = key; kp < key + keyslen; kp++) {
1678 if (kp->k != k)
1679 continue;
1680
1681 if (!match(kp->mask, state))
1682 continue;
1683
1684 if (IS_SET(MODE_APPKEYPAD) ? kp->appkey < 0 : kp->appkey > 0)
1685 continue;
1686 if (term.numlock && kp->appkey == 2)
1687 continue;
1688
1689 if (IS_SET(MODE_APPCURSOR) ? kp->appcursor < 0 : kp->appcursor > 0)
1690 continue;
1691
1692 if (IS_SET(MODE_CRLF) ? kp->crlf < 0 : kp->crlf > 0)
1693 continue;
1694
1695 return kp->s;
1696 }
1697
1698 return NULL;
1699 }
1700
1701 void
1702 kpress(XEvent *ev)
1703 {
1704 XKeyEvent *e = &ev->xkey;
1705 KeySym ksym;
1706 char buf[32], *customkey;
1707 int len;
1708 Rune c;
1709 Status status;
1710 Shortcut *bp;
1711
1712 if (IS_SET(MODE_KBDLOCK))
1713 return;
1714
1715 len = XmbLookupString(xw.xic, e, buf, sizeof buf, &ksym, &status);
1716 /* 1. shortcuts */
1717 for (bp = shortcuts; bp < shortcuts + shortcutslen; bp++) {
1718 if (ksym == bp->keysym && match(bp->mod, e->state)) {
1719 bp->func(&(bp->arg));
1720 return;
1721 }
1722 }
1723
1724 /* 2. custom keys from config.h */
1725 if ((customkey = kmap(ksym, e->state))) {
1726 ttysend(customkey, strlen(customkey));
1727 return;
1728 }
1729
1730 /* 3. composed string from input method */
1731 if (len == 0)
1732 return;
1733 if (len == 1 && e->state & Mod1Mask) {
1734 if (IS_SET(MODE_8BIT)) {
1735 if (*buf < 0177) {
1736 c = *buf | 0x80;
1737 len = utf8encode(c, buf);
1738 }
1739 } else {
1740 buf[1] = buf[0];
1741 buf[0] = '\033';
1742 len = 2;
1743 }
1744 }
1745 ttysend(buf, len);
1746 }
1747
1748
1749 void
1750 cmessage(XEvent *e)
1751 {
1752 /*
1753 * See xembed specs
1754 * http://standards.freedesktop.org/xembed-spec/xembed-spec-latest.html
1755 */
1756 if (e->xclient.message_type == xw.xembed && e->xclient.format == 32) {
1757 if (e->xclient.data.l[1] == XEMBED_FOCUS_IN) {
1758 win.state |= WIN_FOCUSED;
1759 xseturgency(0);
1760 } else if (e->xclient.data.l[1] == XEMBED_FOCUS_OUT) {
1761 win.state &= ~WIN_FOCUSED;
1762 }
1763 } else if (e->xclient.data.l[0] == xw.wmdeletewin) {
1764 /* Send SIGHUP to shell */
1765 kill(pid, SIGHUP);
1766 exit(0);
1767 }
1768 }
1769
1770 void
1771 resize(XEvent *e)
1772 {
1773 if (e->xconfigure.width == win.w && e->xconfigure.height == win.h)
1774 return;
1775
1776 cresize(e->xconfigure.width, e->xconfigure.height);
1777 ttyresize(win.tw, win.th);
1778 }
1779
1780 void
1781 run(void)
1782 {
1783 XEvent ev;
1784 int w = win.w, h = win.h;
1785 fd_set rfd;
1786 int xfd = XConnectionNumber(xw.dpy), xev, blinkset = 0, dodraw = 0;
1787 struct timespec drawtimeout, *tv = NULL, now, last, lastblink;
1788 long deltatime;
1789
1790 /* Waiting for window mapping */
1791 do {
1792 XNextEvent(xw.dpy, &ev);
1793 /*
1794 * This XFilterEvent call is required because of XOpenIM. It
1795 * does filter out the key event and some client message for
1796 * the input method too.
1797 */
1798 if (XFilterEvent(&ev, None))
1799 continue;
1800 if (ev.type == ConfigureNotify) {
1801 w = ev.xconfigure.width;
1802 h = ev.xconfigure.height;
1803 }
1804 } while (ev.type != MapNotify);
1805
1806 cresize(w, h);
1807 ttynew(opt_line, opt_io, opt_cmd);
1808 ttyresize(win.tw, win.th);
1809
1810 clock_gettime(CLOCK_MONOTONIC, &last);
1811 lastblink = last;
1812
1813 for (xev = actionfps;;) {
1814 FD_ZERO(&rfd);
1815 FD_SET(cmdfd, &rfd);
1816 FD_SET(xfd, &rfd);
1817
1818 if (pselect(MAX(xfd, cmdfd)+1, &rfd, NULL, NULL, tv, NULL) < 0) {
1819 if (errno == EINTR)
1820 continue;
1821 die("select failed: %s\n", strerror(errno));
1822 }
1823 if (FD_ISSET(cmdfd, &rfd)) {
1824 ttyread();
1825 if (blinktimeout) {
1826 blinkset = tattrset(ATTR_BLINK);
1827 if (!blinkset)
1828 MODBIT(term.mode, 0, MODE_BLINK);
1829 }
1830 }
1831
1832 if (FD_ISSET(xfd, &rfd))
1833 xev = actionfps;
1834
1835 clock_gettime(CLOCK_MONOTONIC, &now);
1836 drawtimeout.tv_sec = 0;
1837 drawtimeout.tv_nsec = (1000 * 1E6)/ xfps;
1838 tv = &drawtimeout;
1839
1840 dodraw = 0;
1841 if (blinktimeout && TIMEDIFF(now, lastblink) > blinktimeout) {
1842 tsetdirtattr(ATTR_BLINK);
1843 term.mode ^= MODE_BLINK;
1844 lastblink = now;
1845 dodraw = 1;
1846 }
1847 deltatime = TIMEDIFF(now, last);
1848 if (deltatime > 1000 / (xev ? xfps : actionfps)) {
1849 dodraw = 1;
1850 last = now;
1851 }
1852
1853 if (dodraw) {
1854 while (XPending(xw.dpy)) {
1855 XNextEvent(xw.dpy, &ev);
1856 if (XFilterEvent(&ev, None))
1857 continue;
1858 if (handler[ev.type])
1859 (handler[ev.type])(&ev);
1860 }
1861
1862 draw();
1863 XFlush(xw.dpy);
1864
1865 if (xev && !FD_ISSET(xfd, &rfd))
1866 xev--;
1867 if (!FD_ISSET(cmdfd, &rfd) && !FD_ISSET(xfd, &rfd)) {
1868 if (blinkset) {
1869 if (TIMEDIFF(now, lastblink) \
1870 > blinktimeout) {
1871 drawtimeout.tv_nsec = 1000;
1872 } else {
1873 drawtimeout.tv_nsec = (1E6 * \
1874 (blinktimeout - \
1875 TIMEDIFF(now,
1876 lastblink)));
1877 }
1878 drawtimeout.tv_sec = \
1879 drawtimeout.tv_nsec / 1E9;
1880 drawtimeout.tv_nsec %= (long)1E9;
1881 } else {
1882 tv = NULL;
1883 }
1884 }
1885 }
1886 }
1887 }
1888
1889 void
1890 usage(void)
1891 {
1892 die("usage: %s [-aiv] [-c class] [-f font] [-g geometry]"
1893 " [-n name] [-o file]\n"
1894 " [-T title] [-t title] [-w windowid]"
1895 " [[-e] command [args ...]]\n"
1896 " %s [-aiv] [-c class] [-f font] [-g geometry]"
1897 " [-n name] [-o file]\n"
1898 " [-T title] [-t title] [-w windowid] -l line"
1899 " [stty_args ...]\n", argv0, argv0);
1900 }
1901
1902 int
1903 main(int argc, char *argv[])
1904 {
1905 xw.l = xw.t = 0;
1906 xw.isfixed = False;
1907 win.cursor = cursorshape;
1908
1909 ARGBEGIN {
1910 case 'a':
1911 allowaltscreen = 0;
1912 break;
1913 case 'c':
1914 opt_class = EARGF(usage());
1915 break;
1916 case 'e':
1917 if (argc > 0)
1918 --argc, ++argv;
1919 goto run;
1920 case 'f':
1921 opt_font = EARGF(usage());
1922 break;
1923 case 'g':
1924 xw.gm = XParseGeometry(EARGF(usage()),
1925 &xw.l, &xw.t, &cols, &rows);
1926 break;
1927 case 'i':
1928 xw.isfixed = 1;
1929 break;
1930 case 'o':
1931 opt_io = EARGF(usage());
1932 break;
1933 case 'l':
1934 opt_line = EARGF(usage());
1935 break;
1936 case 'n':
1937 opt_name = EARGF(usage());
1938 break;
1939 case 't':
1940 case 'T':
1941 opt_title = EARGF(usage());
1942 break;
1943 case 'w':
1944 opt_embed = EARGF(usage());
1945 break;
1946 case 'v':
1947 die("%s " VERSION " (c) 2010-2016 st engineers\n", argv0);
1948 break;
1949 default:
1950 usage();
1951 } ARGEND;
1952
1953 run:
1954 if (argc > 0) {
1955 /* eat all remaining arguments */
1956 opt_cmd = argv;
1957 if (!opt_title && !opt_line)
1958 opt_title = basename(xstrdup(argv[0]));
1959 }
1960 setlocale(LC_CTYPE, "");
1961 XSetLocaleModifiers("");
1962 tnew(MAX(cols, 1), MAX(rows, 1));
1963 xinit();
1964 xsetenv();
1965 selinit();
1966 run();
1967
1968 return 0;
1969 }